julioriffel / Snippets-Android-Kotlin

Trechos de Código Kotlin para Android

#Trechos de Código Kotlin para Android

Sumario

1. Datablind
2. Permissoes
3. Codigo de Barras

Datablind

(Fonte)[https://developer.android.com/topic/libraries/data-binding]

Em builg.gradle adicionar:

android{ 
...
    buildFeatures {
        viewBinding = true
    }
}

na Activity:

class MainActivity : AppCompatActivity(){

    private lateinit var binding: ActivityMainBinding

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityMainBinding.inflate(layoutInflater)
        val view = binding.root
        setContentView(view)
        binding.tvNome.setText("Nome")
    }

Permissoes

Em builg.gradle adicionar:

dependencies {
...
    implementation 'com.vmadalin:easypermissions-ktx:1.0.0'
}

Em AndroidManifest.xml adicionar:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.exemplo.exemplo">

    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.FLASHLIGHT" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.READ_CONTACTS" />
    <uses-permission android:name="android.permission.READ_SMS" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher" ...

codigo Activity

Codido de Barras

    implementation('me.dm7.barcodescanner:zxing:1.9.8') {
        exclude module: 'support-v4'
    }

codigo Activity Fonte Leitor de Códigos no Android com Barcode Scanner API - ZXing Vinícius Thiengo